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    <title>pen2ea</title>
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    <center>Scilab Function</center>
    <div align="right">Last update : April 1993</div>
    <p>
      <b>pen2ea</b> -  pencil to E,A conversion</p>
    <h3>
      <font color="blue">Calling Sequence</font>
    </h3>
    <dl>
      <dd>
        <tt>[E,A]=pen2ea(Fs)  </tt>
      </dd>
    </dl>
    <h3>
      <font color="blue">Parameters</font>
    </h3>
    <ul>
      <li>
        <tt>
          <b>Fs</b>
        </tt>: matrix pencil <tt>
          <b>s*E-A</b>
        </tt>
      </li>
      <li>
        <tt>
          <b>E,A</b>
        </tt>: two matrices such that <tt>
          <b>Fs=s*E-A</b>
        </tt>
      </li>
    </ul>
    <h3>
      <font color="blue">Description</font>
    </h3>
    <p>
    Utility function. Given the pencil <tt>
        <b>Fs=s*E-A</b>
      </tt>,
    returns the matrices <tt>
        <b>E</b>
      </tt> and <tt>
        <b>A</b>
      </tt>.</p>
    <h3>
      <font color="blue">Examples</font>
    </h3>
    <pre>

E=[1,0];A=[1,2];s=poly(0,'s');
[E,A]=pen2ea(s*E-A)
 
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